Ours start at $85.00 for a dinky, which takes around ten minutes. The larger systems all have remote capability and can take a half a day and cost $400.00 and up. When we winterize, each zone is inspected for leaks, breaks, ect. and noted in a field report for winter and spring work. We love winterizing, one time we put it off because we were so busy with installs, it was in December and was freezing when we fired the compressor. The sun came out and the mist from the heads froze into crystals. It was drop-dead gorgeous!